\begin{table}

\caption{\label{tab:tab_j1}\textbf{Coefficient Estimates from Figure 4}: This table reports the estimated coecients
and associated standard errors, computed based on a block-bootstrap procedure, which are used
to produce Figure 4. The number of observations is 13,376,688 firm-politician-year dyads in the
House, and 3,058,224 dyads in the Senate. To compute the Senate and the House results, we
identified all dyads where a particular company donated to a particular politician for the first
time in at least three years. For the Senate, there are 3,778 such instances. In the House, the
number is 5,497.}
\centering
\begin{tabu} to \linewidth {>{\raggedright}X>{\centering}X>{\centering}X>{\centering}X>{\centering}X}
\hline
\multicolumn{1}{c|}{\em{ }} & \multicolumn{4}{c}{\em{Dependent Variable:}} \\
\cline{2-5}
\multicolumn{1}{c|}{ } & \multicolumn{4}{c}{Estimated Effect of Donation on Probability to Lobby in:} \\
Chamber & \textit{t+0} & \textit{t+1} & \textit{t+2} & \textit{t+3}\\
\hline
\textit{Senate} & 0.075 & 0.097 & 0.108 & 0.11\\
\hline
 & (0.0029) & (0.0033) & (0.0036) & (0.0037)\\
\hline
\textit{House} & 0.086 & 0.111 & 0.127 & 0.127\\
\hline
 & (0.002) & (0.0023) & (0.0025) & (0.0026)\\
\hline
\multicolumn{5}{l}{\rule{0pt}{1em}\textit{Note: } Std. errors in parentheses}\\
\end{tabu}
\end{table}
